Number of nX6 0..4 arrays with each element x equal to the number its horizontal and vertical neighbors equal to 0,2,1,1,1 for x=0,1,2,3,4.
A197887
Number of nX6 0..4 arrays with each element x equal to the number its horizontal and vertical neighbors equal to 0,2,1,1,1 for x=0,1,2,3,4.
Terms
- a(0) =1a(1) =43a(2) =196a(3) =2263a(4) =17890a(5) =129294a(6) =1134527a(7) =9389938a(8) =74334188a(9) =612587633a(10) =4957017898a(11) =40458420396a(12) =328259829544
External references
- oeis: A197887